nixpkgs/nixos/modules/virtualisation/nixos-container.sh

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#! @bash@/bin/sh -e
usage() {
echo "Usage: $0 login <container-name>" >&2
echo " $0 root-shell <container-name>" >&2
}
args="`getopt --options '' -l help -- "$@"`"
eval "set -- $args"
while [ $# -gt 0 ]; do
case "$1" in
(--help) usage; exit 0;;
(--) shift; break;;
(*) break;;
esac
shift
done
action="$1"
if [ -z "$action" ]; then usage; exit 1; fi
shift
getContainerRoot() {
root="/var/lib/containers/$container"
if ! [ -d "$root" ]; then
echo "$0: container $container does not exist" >&2
exit 1
fi
}
if [ $action = login ]; then
container="$1"
if [ -z "$container" ]; then usage; exit 1; fi
shift
getContainerRoot
exec @socat@/bin/socat "unix:$root/var/lib/login.socket" -,echo=0,raw
elif [ $action = root-shell ]; then
container="$1"
if [ -z "$container" ]; then usage; exit 1; fi
shift
getContainerRoot
exec @socat@/bin/socat "unix:$root/var/lib/root-shell.socket" -
else
echo "$0: unknown action $action" >&2
exit 1
fi